Sensing directional forces in levitated optomechanics

Jonathan M. Gosling; Antonio Pontin; Julian H. Iacoponi; Peter F. Barker; Tania S. Monteiro

doi:10.1117/12.3001524

13 March 2024 Sensing directional forces in levitated optomechanics

Jonathan M. Gosling, Antonio Pontin, Julian H. Iacoponi, Peter F. Barker, Tania S. Monteiro

Proceedings Volume PC12912, Quantum Sensing, Imaging, and Precision Metrology II; PC129121V (2024) https://doi.org/10.1117/12.3001524
Event: SPIE Quantum West, 2024, San Francisco, California, United States

Abstract

Optomechanical devices are being actively harnessed as sensors for ultraweak forces, with a growing range of applications including inertial sensing or dark matter sensors. Dark matter searches aim to use directional detection to discriminate from interfering backgrounds. We present a calibration-free approach to measurements of directional stochastic forces by using the cross-correlation power spectra. We show that these provide a distinctive signature of the presence of a directional broad-spectrum force, as well as its orientation quadrant. Accurate measurement of the angle offers something akin to a force compass in the x-y plane and a promising tool for dark matter searches.

Conference Presentation

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Jonathan M. Gosling, Antonio Pontin, Julian H. Iacoponi, Peter F. Barker, and Tania S. Monteiro "Sensing directional forces in levitated optomechanics", Proc. SPIE PC12912, Quantum Sensing, Imaging, and Precision Metrology II, PC129121V (13 March 2024); https://doi.org/10.1117/12.3001524

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